Approval for works

Whether you are a property owner, contractor or developer, you may require approval before working near our assets.

Under Section 90 of the Water Services Act 2012, Water Corporation requires you to request approval if your proposed works are in, over, under or within the Prescribed Proximities to our assets defined below.

These proximities have been established to protect our assets from damage as well as ensuring that third parties building near our assets avoid costs and inconvenience associated with removing or altering your work as necessary to prevent damage.

Other works
Including movement of heavy vehicles, ground compaction,
dewatering, earthworks, open and trenchless excavations

Water supply pipelines

≥ 300 mm diameter

6m

Sewer pressure mains

All

Drainage pressure mains

All

Other works

Water supply pipelines

<300 mm diameter

4m

Other works

Sewer pipelines

All

2m

Main drains

All

Work that does not require approval

Light weight structures, fences and walls than can be readily removed
Planting and removing trees that have a mature height of less than 5 m
Note that requirements still apply to these types of works – refer to Section 8 of our guidelines

For further details of the Prescribed Proximities and relevant legislation, refer to our guidelines.

Ready to apply?

Use the form below to let us know about your project and to seek our approval for doing any of the following types of work in, over, under or within the Prescribed Proximities:

development of key infrastructure (such as freeways, railways, bridges, tunnels, major building developments.